[clang] [flang] [llvm] [mlir] [MLIR][OpenMP][Flang][CIR] Replace the OMP specific PtrLikeType interface with the core interface (PR #197946)

[Jan Leyonberg via cfe-commits]

jsjodin wrote:

> This looks reasonable to me. Is there any way to test it or is this all exercised by existing tests?

It is exercised by existing tests, except for new functions needed because of the shared interface, so those could potentially be replaced with llvm_unreachable since OpenMP does not use those functions.

https://github.com/llvm/llvm-project/pull/197946